abstractfieldvalidator.java

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// Copyright 2005-2007 onetsoft.com
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.onetsoft.fastjsp.valid;

import com.onetsoft.fastjsp.util.StringUtils;
import com.onetsoft.fastjsp.util.Util;


/**
 * 抽象域验证类
 * 继承此类须实现{@link this#validate(com.onetsoft.fastjsp.PageCycle)}，从而可实现一些复杂验证，如用户注册验证中检测用户是否存在等
 * 若只是简单实现表单自动验证，则使用{@link FormFieldValidator}即可
 *
 * @author <a href="mailto:[e-mail]">hgw</a>
 * @see FormFieldValidator 实现表单自动验证
 */
public abstract class AbstractFieldValidator implements FieldValidator {

    private String message = null;

    public AbstractFieldValidator() {
    }

    public FieldValidator addValidator(Validator validator) {
        return this;
    }

    public Validator[] getValidators() {
        return Util.EMPTY_VALIDATORS;
    }

    public boolean isError() {
        return message != null;
    }

    public String getMessage() {
        return message;
    }

    /**
     * 设置验证信息
     * @param message
     */
    public void setMessage(String message){
        this.message=message;
    }

    public String getField() {
        return StringUtils.EMPTY;
    }

    public String getDisplayName() {
        return StringUtils.EMPTY;
    }

    public String toString() {
        return message;
    }
}